Drier



Nov. 17, 1925. 1,562,260

w. M. SCHWARTZ DRIER Filed J ne 28, 1921 s She ets-Sheet 1 mwr w V m m \UA m-s A I F flaww. SCHWARTZ Nov.17,1925- DRIER Filed Jun 2s, 1921 3 Sheets Sheet 2 Nov. 17, 1925. I 1,562,260

W. M.'$C 1HWARTZ v DRIER O Filed June 28, 1 21 s sheets-sheet s 5 ziaflwneyi Patented Nov. 17, 1925. i

'' UNITEDTYISTFATES PATENT WALTER in. SCHWARTZ, or PHILADELPHIA, PENNSYLVANIA, AssIeNoR To Home &-SGHWARTZ,' INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A GORPORA l .TION OF PENNSYLVANIA.

fDRIER.

I Application filed June 28, 1921. Serial No. 480,953.

materials without departing from the main features of the invention.

One object of the inventionis to construct a drier so that the feed end of-the drying chamber will be cooler than the delivery end. Y

A further object of the' invention is to provide a' fan, which is located. near the delivery end. of the drier, and to locate-the heating pipesabove the fan so that the air in circulation will pass down through the material at the delivery end of the drying chamber and will circulate upwards at the feed end. 7 f

A still further object of the invention is to provide means to prevent the inrush of cool air through the feed and delivery openings. V I

These objects I attain in the followlng manner, reference being had to the accompanying drawings, in which;

Fig. 1 is a longitudinal sectional View of my improved drier;

Fig. 2 is a transverse sectional view on the line 2 2, Fig. l; v Fig. 3 is a longitudinal sectional View of a modified form of drier;

Fig. 4 is a transverse sectional- View on the line 414 Fig. 3'; and

Fig. 5 is a View illustrating another mod i fication of the invention.

Referring to the drawings, 1 is the cas} ing of the drier, which may be'of any type desired. .2 is the feed opening through which the articles are placed in the drier. 3 is the delivery opening from which the articles are taken from the drier. At or about the center of the drier in the present instance is a vertical partition 4:, which vis connected to a horizontal partition 5'locat-- ed some distance from the top of the drier at the delivery end and terminates some dis air through the feed tance from the bottom of the drier..- In the;

which is a circulating fan 7 mounted on ,a' I. I

horizontal partition .5 is an opening 6. in

vertical shaft 8 extending through of the drier and onwhich is ab or sprocket wheel 9, by-vvhich driven. The'partition divides'the drying chamber into two compartments '10 and 11. At the feed end is'a partition 12 the roof elt'pulley, the-f n is i llocated in, I I I front of the feed opening and at the'denv ery endis a similar partition 13' the i delivery opening.

partitions and act to ,l6,'1 6'are shortpartitio'ns above and below the twoo'pe'ningsjj 'Tlie trays 14, which are carried by theend less chain conveyer 15, fpjasls between ftheii prevent theinru's'hef and delivery openings; fThe trays may be" of any form desired;

dependingupon, the character ,of thelna, it it terial and the's'hapefof the articles to be dried. 14 extend from side to side of theconve'yer and are ivotallygeonneeted to. th

In the present instance 'the traysv l V echainsi" of the 'conveyer 15, which-pass around wheels 22 in the upper portionof the compart'ment 10 and under wheels17 inls'aid.,

' compartment, and around wheel's 18 loc'a'ted directly under the partition dE-an d around wheels 19 intheup'per portion of the compartment l 11 underthe fan and undera wheel 20 in the lower portion of said compartmentj The guide wheels 21, at each,

end of the"drier near the floor, guide the,"

chains from the deliveryend Ito'thefeed end ofthe 'conveyerQ Thechambers 10 a-nd11,

in the present instance, extend to the bot .tom of the .convey er, although a horizontal.

partitionmay be'located some distance from the bottom when 'it is desired to separate the return run'of the conveyer from the run passing through the drying chambers. Heating pipes 23 are located abovexthe partition 4 in the'path of the air in circulation and additional heating pipes 24- may be located onthe opposite side of the, fan,

if; desired. By' thisarrangementgthefair I is reheated before it flows internal compartf-Ioc ment 11 sothat the "material beingc onveyed I through said compartmentis subjected to a; I greater]v degree of heat than. thegmaterlalin fthe compartment 10, r

In Figs. 1 and V '2, the partition ii-tea locatedgat the center of the drying. chn'nberl".., v

. drying isaccoinplished should'be as great,

so that the chamber 10 is of the same length as the chamber 11. In Figs. 3 and 4, a par tition 4: is shown located close to the delivery of the drier and two small fans 7 are used, the fans being located side by side, as illustrated in Fig. 4. Heating pipes 23 and 24? are arranged, as shown.

By this construction, the compartment 10 is considerably larger than the compartment 11 and the material being dried is subjected to warm air while in the compartment 11 for considerbly less time than it is subjected to the air not quite so warm in' the compartment 10. The location of the vertical partition in the drier will depend'upon the material being dried, but, in any case, the space in which the primary and, in'inany instances, greater, than that in which the drying is completed at a higher temperature.

In Fig. 5 is shown a modification in which a circulating fan "is located at thev feed end or the drier, in addition to the fan at the delivery end, and a partition is so arranged as 'to'cause a circulation of air at the feed end independently or" the circulation of airat the delivery end. In this case, the'air in circulation at the feed end the drier is heated to a lessdegree than that at the delivery end or, it may be air under normal temperature, if desired. The operation is as follows,rret'erring to Figs." 1 and2. The material to be dried is placed on the trays 14' through the opening 2 and as the'conveyor travels in the direction indicatedby the arrows the ma- ,terial is subjected to thejup currents of air in the compartment 10, the air being comparatively cool. The conveyor with the material passes under the partition 4 and into the compartment 11 where it is subjected to the direct action of down currents of heated air, which is caused by the fan 7 to circulate down through the compartment 11 and up through the compartment 10. the partitions 13 and 16, and when the trays are opposite the opening 3, the material is removed from the tray. The air as it passes from the compartment 10 to the space above the partition 5 is reheated by the steam pipes 23 and 26h By this construction the material passing through the compartment 11 is subjected to a greater degree of heat than the materialpa'ss'ing through the com- V partment 10.

1. The combination in a drier. having a feed 0 aening. at one end, and a discharge opening at the opposite end; a drying chamber; avertical partition dividing the main iportion'of the chamber into two compart- The conveyor finally passes between ments, but affording communication between the compartments at top and bottom; a hori zontal circulating fan above the compartment at the delivery end of the drier, and means near the fan for heating the air so that heated air will be circulated down through the compartment at the delivery end and the cooler air will be circulated upwards in the compartment at the feed end of the drier, and a conveyor arranged to.

travel through both compartments.

2. The combination in a drier having a teed opening at one end and a discharge opening at the opposite end, of a drying chamber; a vertical partition dividing the main portion of the chamber into two compartinents but affording communication be tween the comp-artments'at top and bottom, the compartment at the feed end of the drier being equal'to, or greater than, the

compartment at the delivery end; means ror carrying material through the drier; a v

circulating fan locatedso as to cause a downward circulat on in the compartment at the delivery end and an upward'circula- 'tion in the compartment atthe reed end; i

and means for heating tlie, air in circulation.

teed openingat one end'and a dischargeopeningat the opposite end, oiadrying chamber; a vertical partition dividing the main port on of the chamber into two com- 3; The combination in a drier having :a

in both compartments of "the-drier for directing the conveyorin a circuitous path so that thematerial on the trays will be sub j ected to up currents of air in the compartment at. the feed end of the drierand to down currents 0t air in the compartment at the delivery end of the drier.

4i. The combination in a drier, of a drying chamber; a vertical partition stopping short of the top and bottom of the drying chamber and dividing said chamber into two compartments; means for circulating air in said compartments, the drier having a feed opening at one end and a delivery opening at the opposite end; partitions extending above and below said openings; and'trays lit-ting the spaces between the partitions at p through said openings.

WALTER M. SCHWARllZ}.

each opening and acting toprevent the inrush oi air 

